Kevin Costner chats with ET’s Cassie DiLaura at the CinemaCon 2024 WB Presentation about his movie, ‘Horizon: An American Saga.’ Chapter 1 hits theaters June 28 and chapter 2 hits theaters Aug. 16. The actor says he would love to return to ‘Yellowstone’ as John Dutton, but it’s up to show creator Taylor Sheridan. Plus, Kevin discusses his decision to cast his son, Hayes, in the film and shares what kind of projects he’s interested in working on in the future.